Lake Sammamish is a freshwater lake located in King County, Washington, just east of Seattle. It spans approximately 8.5 miles in length and covers an area of about 1,500 acres. The lake is fed by several rivers and streams, including the Sammamish River, which connects it to Lake Washington. The lake is surrounded by several parks, including Lake Sammamish State Park, which offers recreational activities such as swimming, fishing, and hiking. The area is popular for its scenic views and wildlife, making it a favorite destination for both locals and visitors.